Design Diagnostics

In the Evaluate Design report, the Design Diagnostics section shows D-, G-, and A-efficiencies and the average variance of prediction. These diagnostics are not available for designs that include factors with Changes set to Hard or Very Hard or effects with Estimability designated as If Possible. Use efficiencies to compare designs. Given two designs, the one with the higher efficiency measure is better. The maximum efficiency is 100 for any criterion; however, an efficiency of 100% is impossible for many designs. See Design Efficiency.

A Design Creation Time value is also reported. When Design Diagnostics is accessed from a DOE platform other than Evaluate Design, the Design Creation Time gives the amount of time required to create the design. When Design Diagnostics is accessed from the Evaluate Design platform, Design Creation Time gives the amount of time required for the Evaluate Design platform to calculate results.

Figure 16.13 Design Diagnostics